----- Have you seen your nephew lately? ------ Yes, in fact, I saw him yesterday.I ______ him for three years.
It was the A/N1H1 epidemic ____ spread almost throughout the country ____ promoted the research and production of the flu vaccine.
The traffic in Shanghai will be blocked and people will come to blows _____ the government plans in advance.
— Where’s your assignment?— ____
The customers objected ____ unfairly in the course of shopping.
A major issue was put forward by some representatives at the conference ____ the teachers in the remote areas were underpaid.